Its county seat is San Antonio, the second-most populous city in Texas and the seventh-largest city in the United States. Bexar County is included in the San Antonio-New Braunfels, TX metropolitan statistical area. Bexar county includes Government Canyon state natural area in northwestern part of the county.
If the screen width is 7 feet and the projector's throw ratio is 2.0 - 2.4:1 (because projectors have zoom lenses, they also have a range of throw ratios) then you can place your projector anywhere from 14 to 16.8 feet away from the screen.
Monitor distance from the eye. The best distance from which to read a computer screen is generally greater than reading distances for papers and books. Typical distances for reading from a paper or book is from 15 to 25. Computer screens should be further away, sometimes 30 or more. Maximum viewing distance: First of all, there is no maximum viewing distance. As long as you can comfortably discern the information on the screen it's not too far away.